How to Differentiate Benign from Malignant Adrenocortical Tumors?

Area of Science:

• Endocrinology
• Oncology
• Pathology

Background:

• Adrenocortical carcinoma (ACC) is a rare endocrine malignancy with poor prognosis.
• Adrenal incidentalomas are common, necessitating accurate differentiation from malignant tumors.
• Accurate diagnosis is crucial for appropriate management strategies.

Purpose of the Study:

• To review current diagnostic modalities for adrenocortical carcinoma.
• To highlight challenges in differentiating benign from malignant adrenal tumors.
• To discuss novel diagnostic tools and molecular insights.

Main Methods:

• Review of current diagnostic approaches including physical examination, biochemical tests, and imaging (CT).
• Evaluation of histopathological criteria (Weiss score) and their limitations.
• Exploration of emerging technologies like urine metabolomics, immunohistochemistry, and molecular markers (DNA, methylome, microRNA).

Main Results:

• Computed tomography features like size and Hounsfield units aid initial assessment.
• Urine metabolomics shows potential for preoperative discrimination.
• Novel molecular markers and liquid biopsies are under investigation for improved diagnostic accuracy.

Conclusions:

• Accurate diagnosis of ACC remains challenging due to limitations of current methods.
• Emerging molecular and liquid biopsy techniques offer promising avenues for improved diagnostic accuracy.
• Continued research is essential to refine diagnostic strategies for ACC.